package com.chen.controller;

import com.chen.pojo.Dept;
import com.chen.service.DeptService;
import com.chen.service.Impl.DeptServiceImpl;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController
public class DeptController {

    @Autowired
    private DeptService deptService;

    @GetMapping("/dept/get/{id}")
    @HystrixCommand(fallbackMethod ="hystrixGet" )  //熔断机制，只要失败了就调用下面的方法
    public Dept get(@PathVariable("id") Long id) {
        Dept dept = deptService.queryById(id);
        if (dept == null) {
            throw new RuntimeException("id=>" + id + "不存在该用户");
        }
        return dept;
    }


    //备选方案
    public Dept hystrixGet(@PathVariable("id") Long id) {
        return new Dept().setDeptno(id)
                .setDname("id=>" + id + "不存在该用户，没有对应的信息，null")
                .setDb_source("没有这个数据库");
    }

}
